Question: "Which is {facet of a polytope} of {24-cell}, that has {three-dimensional model} is {Octahedron.stl} ?"
Paraphrase: "Which is {facet of a polytope} of {24-cell}, that has {three-dimensional model} is {Octahedron.stl} ?"
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q539008 wdt:P1312 ?answer . ?answer wdt:P4896 ?x FILTER(contains(?x , 'Octahedron.stl'))}